The elements of navigation : containing the theory and practice, with all the necessary tables, to which is added, a treatise of marine fortification ... (1754)
Robertson, J. (John), 1712-1776, Adams, Charles Francis, 1807-1886, former owner. BRL, Adams, John, 1735-1826, former owner. BRL, Boston Public Library) John Adams Library BRL · London : Printed for J. Nourse ... · leaf 273
ired the difference of their rate of failing, and thprefent latitude f As the fhip and floop failed from the fame me dian, and the floop runs ciire<5tly eaft j therefc her diftance will be the fhips departure. Now in 4 days are 96 hours. And 96 x 6 = 576 miles Of dep. Const. Defcribe the… … As fin. Cou. ~ 6i° 52 0,0546cTo dep. — 576 m. 2,76042 SoRad — 900 oo; 19,00000 To dift. = 653,2 m. 2,81502 Now 96)653,2(6,8 m. per hour the [fhips rate. .77* As fin. Cou. = 6i° 52 -0,01541 To dep. zr: $j6 m. 2,760 So cof. Cou. =: 6i° 52 9,673 To diff. lat. = 308 m. 2,4 And 6,b)30,8( Then Lat. fr.…
Navigation · Nautical astronomy · Fortification
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